139518421

Names of 139518421

• Cardinal: 139518421 can be written as One hundred thirty-nine million, five hundred eighteen thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 1.39518421 × 10⁸

Factors of 139518421

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 337883

Divisors of 139518421

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 59 413 337817 2364719 19931203 139518421
• Sum of all divisors σ(n): 162152640
• Sum of proper divisors (its aliquot sum) s(n): 22634219
• 139518421 is a deficient number, because the sum of its proper divisors (22634219) is less than itself. Its deficiency is 116884202

Bases of 139518421

• Binary: 1000010100001110000111010101₂
• Hexadecimal: 0x850E1D5
• Base-36: 2B2D3P

Squares and roots of 139518421

• 139518421 squared (139518421²) is 19465389798333241
• 139518421 cubed (139518421³) is 2715780448812962216132461
• The square root of 139518421 is 11811.7916083887
• The cube root of 139518421 is 518.6533461769

Scales and comparisons

• 139,518,421 seconds is equal to 4 years, 22 weeks, 4 days, 19 hours, 7 minutes, 1 second.
• To count from 1 to 139,518,421 would take you about six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 139518421 cubic inches would be around 43.2 feet tall.

Recreational maths with 139518421

• 139518421 backwards is 124815931
• The number of decimal digits it has is: 9
• The sum of 139518421's digits is 34
• More coming soon!